linux-kernel - Re: [PATCH 1/5] iommu/tegra-smmu: Unwrap tegra_smmu_group

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Date:   Mon, 28 Sep 2020 12:33:28 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     joro@...tes.org, krzk@...nel.org, vdumpa@...dia.com,
        jonathanh@...dia.com, linux-tegra@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] iommu/tegra-smmu: Unwrap tegra_smmu_group_get

Hi Thierry,

Thanks for the review.

On Mon, Sep 28, 2020 at 09:13:56AM +0200, Thierry Reding wrote:
> > -static struct iommu_group *tegra_smmu_group_get(struct tegra_smmu *smmu,
> > -						unsigned int swgroup)
> > +static struct iommu_group *tegra_smmu_device_group(struct device *dev)
> >  {
> > +	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
> > +	struct tegra_smmu *smmu = dev_iommu_priv_get(dev);
> >  	const struct tegra_smmu_group_soc *soc;
> >  	struct tegra_smmu_group *group;
> > +	int swgroup = fwspec->ids[0];
> 
> This should be unsigned int to match the type of swgroup elsewhere.
> Also, it might not be worth having an extra local variable for this
> since it's only used once.

Will change to unsigned int. There are actually a few places using
it in this function, previously tegra_smmu_group_get().